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Harris´s Hawk

Parabuteo unicinctus
(Temminck, CJ, 1824)
Gavilán Mixto
Gavião-asa-de-telha

Family: Accipitridae
Order: Accipitriformes
Class: Aves
Phylum / Division: Chordata
Kingdom: Animalia

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Records from Argentina

Conservation status according to BirdLife International: Least Concern

Synonyms: Falco unicinctus.

Subspecies:


Description: A medium-to-large raptor with an elegant outline, easily recognized by the contrast between its dark brown body, rich rufous wing coverts, and paler legs and tail base. A prominent white tail band is visible both perched and in flight. Its robust head, hooked bluish-gray bill and long yellowish tarsi lend it a powerful and agile appearance, well suited for maneuvering through shrubs and open spaces.

Geographical distribution: Ranges widely across the Americas, from the southwestern United States and Mexico through Central America and extensive areas of South America, including Brazil, Bolivia, Paraguay, Uruguay, Chile, and Argentina. It is most common in arid and semiarid regions with low vegetation, where small prey and elevated perches are readily available.

Habitat: Occupies open or semi-open environments such as scrublands, savannas, dry forests, arid zones, grasslands, and rural landscapes with scattered trees. It tolerates modified habitats when they provide open spaces for hunting and natural or artificial structures for perching.

Diet: Predominantly consumes small mammals, small birds, reptiles and occasionally large insects. A versatile hunter, it combines low flights, short pursuits and ambushes from elevated perches. One of its most distinctive traits is the ability to engage in cooperative hunting, where coordinated group strategies greatly increase capture success.

Behavior: Notably social for a raptor, forming family groups that may include several individuals assisting in territory defense, hunting and raising the young. Its flight is broad and controlled, alternating glides with strong wingbeats. Frequent use of fence posts, branches and other elevated points reflects its constant vigilance behavior.

Breeding: Builds nests in medium to tall trees, on columnar cacti or occasionally on human-made structures. Nests consist of sturdy branches forming a platform reused over multiple seasons. Typical clutches contain two to four eggs, mostly incubated by the female. Juveniles remain with the group for an extended period, learning cooperative hunting before dispersing.

Conservation status: Listed as Least Concern, with stable populations throughout most of its range. Its cooperative behavior and adaptability to open habitats favor its persistence, though localized threats include habitat degradation and persecution.


Author of this compilation: EcoRegistros – 08/12/2025




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Last Vocalizations published



Audio playerUserDateCountryProvincePlaceSexLife stageIt was observedDetails
René Fernando Bilbao01/28/2026ArgentinaBuenos AiresMar de CoboN/AN/AYesNo
René Fernando Bilbao01/28/2026ArgentinaBuenos AiresMar de CoboN/AN/AYesNo
Viviana Fuentes02/01/2026ArgentinaCatamarcaEntre santa maria y amaicha del valleSanta MaríaIndistinguishableN/AYesNo
María Alejandra Sosa12/03/2025ArgentinaBuenos AiresPaseo del BosqueLa PlataN/AAdultYesNo
María Alejandra Sosa12/01/2025ArgentinaBuenos AiresPaseo del BosqueLa PlataN/AN/ANoNo
María Alejandra Sosa12/01/2025ArgentinaBuenos AiresPaseo del BosqueLa PlataN/AN/ANoNo
María Alejandra Sosa12/01/2025ArgentinaBuenos AiresPaseo del BosqueLa PlataN/AN/ANoNo
Viviana Fuentes04/20/2025ArgentinaSaltaPlaza San MartinCafayateN/AN/ANoNo
Pablo Bruni02/25/2023ArgentinaEntre RíosParque Nacional El PalmarN/AN/AYesNo
Gustavo Pascuas01/20/2023ArgentinaBuenos AiresMar AzulAdultNoNo
María Alejandra Sosa08/30/2021ArgentinaBuenos AiresAvenida 60 440La PlataN/AN/AYesNo
Hugo Caverzasi04/11/2020ArgentinaCórdobaCampo E. AlvarezLas VarillasN/AN/ANoNo
Diego Oscar02/19/2017ArgentinaBuenos AiresIngeniero MaschwitzIndistinguishableImmatureYesNo
Federico Burgos Bauer01/28/2015ArgentinaLa PampaLaguna GuatrachéGuatrachéN/AAdultYesNo
Santiago Sainz-trápaga11/16/2013ArgentinaChubutPuerto MadrynIndistinguishableAdultYesNo
Alejandra Valerani02/13/2014ArgentinaBuenos AiresVilla del Parque/fuente de los VascosTandilIndistinguishableAdultYesNo
Carlos M. Grassini08/18/2013ArgentinaEntre RíosGorgonzola, entre Posina y Monza, monte de espinalChajaríIndistinguishableAdultYesNo
Jose Luis Merlo05/08/2009ArgentinaBuenos AiresParque Natural Municipal Ribera Norte (San Isidro)IndistinguishableJuvenileYesNo



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Last Filmings published


Video ID: 6669
  Adult

Rosario
Santa Fe
Argentina
05/18/2025
Peter Vidana
Video ID: 6114
  Fledgling

Cafayate
Salta
Argentina
01/05/2024
Viviana Fuentes
Video ID: 6068
  Immature

Lomas de Zamora
Buenos Aires
Argentina
12/24/2023
Santos Di Mauro



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 Reports


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Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
245413030/03/202614:41ArgentinaCiudad Autónoma de Buenos AiresDoctor Tomás Manuel de Anchorena 23, Comuna 3Nicolas Olejnik
245393229/03/2026ArgentinaCiudad Autónoma de Buenos AiresReserva Ecológica Costanera Sur (RECS)1Diego Oscar
245389829/03/2026ArgentinaCiudad Autónoma de Buenos AiresLago de regatas, Bosques de Palermo1Diego Oscar
245388228/03/202612:56ArgentinaBuenos AiresCabañas Edén Soñado, Tandil1Santiago Juan Torres
245398527/03/2026ArgentinaMendozaParque general san martin, CapitalDamián Carnevale
245253425/03/2026ArgentinaNeuquénJardin botánico, Plottier1Hugo Caverzasi
245077824/03/2026ArgentinaBuenos AiresParque Natural Municipal Ribera Norte (San Isidro)Lucas Peluffo
245265223/03/2026ArgentinaNeuquénParaje La Angostura, Villa Pehuenia1Hugo Caverzasi
245008723/03/202610:07ArgentinaBuenos AiresRuta Provincial 601Santiago Juan Torres
245366622/03/202609:55ArgentinaEntre RíosParque Nacional El Palmar1María Alejandra Sosa
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Citation recommended:

EcoRegistros. 2026. Harris´s Hawk (Parabuteo unicinctus) - Species sheet. Acceded from https://www.ecoregistros.org on 30/03/2026.